A cassette raft was conceived to replace an original pile foundation
design; saving materials and costs.
Smith and Wallwork were called in by Lend Lease to help them with their design and build bid for a new office development in London. In particular our expertise in office design and our unique experience with cassette raft design was required.
The design proposed by the client design team was very similar to a past project we had worked on whilst at Ramboll; a long span steel frame incorporating facade retention and testing foundation conditions; 1 Southampton Row.
We reviewed the tender documents and through engineering calculation estimated the mass of the building and proved a cassette raft foundation as possible; potentially saving the project many hundreds of m3 of concrete and excavation.